2 * net/tipc/core.c: TIPC module code
4 * Copyright (c) 2003-2006, 2013, Ericsson AB
5 * Copyright (c) 2005-2006, 2010-2013, Wind River Systems
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20 * Alternatively, this software may be distributed under the terms of the
21 * GNU General Public License ("GPL") version 2 as published by the Free
22 * Software Foundation.
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38 #include "name_table.h"
47 #include <linux/module.h>
49 /* configurable TIPC parameters */
50 unsigned int tipc_net_id __read_mostly;
51 int sysctl_tipc_rmem[3] __read_mostly; /* min/default/max */
53 static int __net_init tipc_init_net(struct net *net)
55 struct tipc_net *tn = net_generic(net, tipc_net_id);
61 tn->addr_trial_end = 0;
62 tn->capabilities = TIPC_NODE_CAPABILITIES;
63 INIT_WORK(&tn->work, tipc_net_finalize_work);
64 memset(tn->node_id, 0, sizeof(tn->node_id));
65 memset(tn->node_id_string, 0, sizeof(tn->node_id_string));
66 tn->mon_threshold = TIPC_DEF_MON_THRESHOLD;
67 get_random_bytes(&tn->random, sizeof(int));
68 INIT_LIST_HEAD(&tn->node_list);
69 spin_lock_init(&tn->node_list_lock);
71 #ifdef CONFIG_TIPC_CRYPTO
72 err = tipc_crypto_start(&tn->crypto_tx, net, NULL);
76 err = tipc_sk_rht_init(net);
80 err = tipc_nametbl_init(net);
84 err = tipc_bcast_init(net);
88 err = tipc_attach_loopback(net);
95 tipc_nametbl_stop(net);
97 tipc_sk_rht_destroy(net);
100 #ifdef CONFIG_TIPC_CRYPTO
101 tipc_crypto_stop(&tn->crypto_tx);
107 static void __net_exit tipc_exit_net(struct net *net)
109 struct tipc_net *tn = tipc_net(net);
111 tipc_detach_loopback(net);
112 /* Make sure the tipc_net_finalize_work() finished */
113 cancel_work_sync(&tn->work);
116 tipc_bcast_stop(net);
117 tipc_nametbl_stop(net);
118 tipc_sk_rht_destroy(net);
119 #ifdef CONFIG_TIPC_CRYPTO
120 tipc_crypto_stop(&tipc_net(net)->crypto_tx);
122 while (atomic_read(&tn->wq_count))
126 static void __net_exit tipc_pernet_pre_exit(struct net *net)
128 tipc_node_pre_cleanup_net(net);
131 static struct pernet_operations tipc_pernet_pre_exit_ops = {
132 .pre_exit = tipc_pernet_pre_exit,
135 static struct pernet_operations tipc_net_ops = {
136 .init = tipc_init_net,
137 .exit = tipc_exit_net,
139 .size = sizeof(struct tipc_net),
142 static struct pernet_operations tipc_topsrv_net_ops = {
143 .init = tipc_topsrv_init_net,
144 .exit = tipc_topsrv_exit_net,
147 static int __init tipc_init(void)
151 pr_info("Activated (version " TIPC_MOD_VER ")\n");
153 sysctl_tipc_rmem[0] = RCVBUF_MIN;
154 sysctl_tipc_rmem[1] = RCVBUF_DEF;
155 sysctl_tipc_rmem[2] = RCVBUF_MAX;
157 err = tipc_register_sysctl();
161 err = register_pernet_device(&tipc_net_ops);
165 err = tipc_socket_init();
169 err = register_pernet_device(&tipc_topsrv_net_ops);
171 goto out_pernet_topsrv;
173 err = register_pernet_subsys(&tipc_pernet_pre_exit_ops);
175 goto out_register_pernet_subsys;
177 err = tipc_bearer_setup();
181 err = tipc_netlink_start();
185 err = tipc_netlink_compat_start();
187 goto out_netlink_compat;
189 pr_info("Started in single node mode\n");
195 tipc_bearer_cleanup();
197 unregister_pernet_subsys(&tipc_pernet_pre_exit_ops);
198 out_register_pernet_subsys:
199 unregister_pernet_device(&tipc_topsrv_net_ops);
203 unregister_pernet_device(&tipc_net_ops);
205 tipc_unregister_sysctl();
207 pr_err("Unable to start in single node mode\n");
211 static void __exit tipc_exit(void)
213 tipc_netlink_compat_stop();
215 tipc_bearer_cleanup();
216 unregister_pernet_subsys(&tipc_pernet_pre_exit_ops);
217 unregister_pernet_device(&tipc_topsrv_net_ops);
219 unregister_pernet_device(&tipc_net_ops);
220 tipc_unregister_sysctl();
222 pr_info("Deactivated\n");
225 module_init(tipc_init);
226 module_exit(tipc_exit);
228 MODULE_DESCRIPTION("TIPC: Transparent Inter Process Communication");
229 MODULE_LICENSE("Dual BSD/GPL");
230 MODULE_VERSION(TIPC_MOD_VER);